I used to have the 1009's which are the same as the Cadenza, but with the large tubes reversed in position. I sold it because I didn't like to bias(which on one amp, it wouldn't stay put). Another reason was that I'm a tweaky person and I was thinking of having it modded($1800)and purchasing NOS tubes at a cost of $2k-a-pair(per amp)for the power versions.
When I aquire the Filarmonia, it won't be as fancy as seperates, but it won't be the hassle either(and might be better to boot).